Finding the Fourth Proportional to 22,418.30, 30,919.59 and 13,915.62

Step by Step Solution

1. Step 1: Write the proportion equation
   22,418.30 : 30,919.59 = 13,915.62 : x
2. Step 2: Convert to fraction form
   22,418.30/30,919.59 = 13,915.62/x
3. Step 3: Cross multiply
   22,418.30x = 30,919.59 × 13,915.62
4. Step 4: Simplify right side
   22,418.30x = 430,265,265.00
5. Step 5: Solve for x
   x = 430,265,265.00/22,418.30
6. Step 6: Final answer
   x = 19,192.59